* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,
body {
    height: 100%
}
#canvas {

    display: block;
}

body {
    overflow: hidden;
}
.button{
    text-align:right;
}
.niceButton2 {
    position: relative;
    background-color: #2B6695;
    border: none;
    font-size: 28px;
    color: #ffffff;
    padding: 20px;
    width: 200px;

    transition-duration: 0.6s;
    text-decoration: none;
    overflow: hidden;
    cursor: pointer;
}
.niceButton2::after {
    content: '';
    background: #53a4f0;
    display: block;
    position: absolute;
    padding-top: 300%;
    padding-left: 350%;
    margin-left: -20px !important;
    margin-top: -120%;
    opacity: 0;
    transition: all 0.8s;
}

.niceButton2:active::after {
    padding: 0;
    margin: 0;
    opacity: 1;
    transition: 0s;
}
.h1{

    background: #2B6695;

    border-radius: 6px 6px 6px 6px;

    box-shadow: 0 0 0 1px #5F5A4B, 1px 1px 6px 1px rgba(10, 10, 0, 0.5);

    color: #FFFFFF;

    font-family: "微软雅黑", "宋体", "黑体", Arial;

    font-size: 18px;

    font-weight: bold;
    height: 40px;
    line-height: 25px;
    padding: 8px 0 5px 5px;
    text-shadow: 2px 2px 3px #222222;
    text-align: center;

}
